No mama, don't let her do this! The last thing you need at that moment is the stress of maintaining anyone's feelings. Let anyone and everyone know that they may either listen behind the curtain till baby's born or wait in the waiting area. This is a private moment and you need to focus on you, dh and your new baby. If it feels right to invite her in at the last moment then do it. But don't let her go into it with any entitlement or expectations. Let me tell ya, it was WEIRD every time they wanted to check me and had to kick 8-10 people out of my room.